A parade of potential Republican presidential candidates took turns at delivering speeches and answering questions at the annual Conservative Political Action Conference that started on Feb. 26. Along the way there were some distortions of facts.

An ad from the National Republican Senatorial Committee continues the relentless effort to tie Democratic Sen. Mary Landrieu to President Barack Obama, who is not very popular in Louisiana. But the ad stretches the facts on several points.

A series of NRA ads employ images of an intruder breaking into the home of a mother home alone with her baby to make the case that Democratic candidates have “voted to take away your gun rights.” But the implication of the jarring imagery goes far beyond the facts.